Cylinder head of internal-combustion engines combined with fuel injectors



June 21, 1927.

2 1,633,158 V. ARCHAOULOFF I I CYLINDER HEAD OF INTERNALCOMBUSTION ENGINES COMBINED WITH FUEL INJ c'roNs Filed Nov. 14, 1924 l .the' invention. 7

' itseli Patented Juhe 21, 1927.

UNITED STATES 5 1,633,158 PATENT OFFICE.

VADIME ABCHAOULOFF, OF BOULOGNE-SU R- SEII N'E, FRANCE.

CYLIITDER HEAD OF INTERNAL-COMBUSTION ENGINES INJECTQRS.

ooinmnn wrrn FUEL Application filed November 14, 1924, Serial 116,749,985, and iii france December 21, 1923;

This -invention relates to a special form of cylinder head for internal combustion engines arranged in sucli manner that a part thereof is "directly combined with the 5" fuel injectoridescribedin the British patent of the same inventor- No. 150,364 of the 12th 'February 1918.

The result f this method of construction is to' obtain the considerable technical advantages and at the same time lowering the cost of erecting the'sinje'ctorand render ing the fitting up and dismantling of its .'parts much more easy, as'will be shown hereinafter in the. complete description of :The accompanying drawin is a section of the cylinder-head and of the injector ac cording to the invention;

- Referring to the drawing 1 is the fly] iIIdQIrhQIId of the engine, which is provi ed with seats and passages which are parts of the injector'itself, for example, the differential injection needle 2, loaded by the spring l0,-the member 3 at the side containin difierent organs of the injector is attached to the top of the c finder-head, the piston 4-workin in a cylinder formed in the cylinder-hea itself. Passages 5 place the lower] part of this cylinder containing '30 the piston 4rin continuous communication,

with the combustion chamber 11 of the engine. Thepipe 6 connects the member 3 with the member 7 in which the difierential needle 2 works.

' It follows from this construction that cyl- 'inder, head and injectorform one aggregate and that all the members comprised in the cylinder head are cooled normally .by the circulating water for the cylinder-head At the'same time all the members on the cylinder-head remain cold, which Q considerably facilitates dismantling and're erection and obviates heat radiation, a condition which is essential in cases where the engine rooms are small, as in submarines for example. n j...This cooling also provides another ad vantage inithat it further protects the piston '4 and the cylinder containing it from the hot gases coming from the combustion chamber, ll-of the working cylinder. The passages 5 moreover are without joints being formed in the cylinder-head itself.

order that the above remarks may be understood the way'in which the injector works will be shortly stated.

The 1 cylinder with its difi'crentialiston 4-'4"ivhich delivers the liquid. fuel is continuously in communication through the passages 5 with the combustion chamber 11 of the engine. The fuel issupplied under pressure by the fuel-pump through the pipe 9. and has to pass through the small nonreturn valve 8 into the chamber 8' whence it is delivered by the piston 4' into, the

pipe 6 and throu 'h the passage 6', provided in the memberinto the part reserved around the end of the needle 2 of the sprayin nozzle 2 Vhen the pressure of the liquid .under theaction of the compression in the cham-' ber 11 attains a predetermined limit :the

differential needle 2 is lifted 011' its seat and the liquid, driven forward by the plunger 4' of the piston 4 whichrises, is injected, by'the spraying nozzle '2' at the right time.

Claim- In an internal combustion engine, in combination, a main cylinder, a head therefor provided with a cylindrical. chamber and 'also' provided with" a pas'sagew'ayleading from a point in communication with thecylinder to the inner end of the chamber, adifierential spring loaded injection valve mountedcentrally'through the head and in communication with the main cylinder,- a member mounted on the main cylinder-head provided with abore in communication I tial piston the lower'portion of which'op-' erates in the chamber of the head, while -with the cylindrical chamber, valve conthe upper portion operates in the bore of the member, said differential piston being responsive to tlie'main cylinder andacting in timed relation with the operation of the injection valve for controlling the passage of the solid fuel into the main cylinder, and a "jacket provided in the main cylinder head, chamber passageway and injection valve, substantially. as and for the purposes set forth;

Intestimony whereof I hereunto aflix my signature.

= VADIME ARCHAOULOFF. 

